Table 3.
Potential predictors of bacteremia
| Predictor Total | No. (%) of series of BCs (310) | No. (%) of series of BCs with bacteremia | Odds ratio (95% confidence interval)* | P* |
|---|---|---|---|---|
| Antibiotic therapy: |
||||
| yes |
138
(45) |
15
(11) |
0.53
(0.27-1.04) |
0.058 |
| no |
172
(55) |
34
(20) |
1 |
|
| Age (years): |
||||
| up to 55 |
87
(28) |
8
(9) |
1 |
0.063 |
| 56 to 65 |
64
(21) |
17
(27) |
3.33
(1.32-8.40) |
|
| 66 to 75 |
87
(28) |
12
(14) |
1.55
(0.60-1.55) |
|
| ≥76 |
72
(23) |
12
(17) |
1.77
(0.67-4.66) |
|
| Sequential Organ Failure Assessment (19): |
||||
| >4 |
122
(39) |
32
(26) |
3.81
(1.95-7.44) |
<0.001 |
| ≤4 |
188
(61) |
17
(9) |
1 |
|
| Simplified Acute Physiology Score II (18): |
||||
| >43 |
150
(48) |
30
(20) |
2.25
(1.16-4.38) |
0.014 |
| ≤43 |
160
(52) |
21
(12) |
1 |
|
| Hepatic failure |
32
(10) |
10
(31) |
2.81
(1.15-6.86) |
0.028 |
| Temperature (°C): |
||||
| >38.5 |
80
(26) |
18
(22) |
1.98
(1.00-3.94) |
0.053 |
| ≤38.5 |
230
(74) |
30
(13) |
1 |
|
| White blood cells (G/L) |
||||
| >12 |
160
(52) |
22
(14) |
0.77
(0.40-1.45) |
0.411 |
| ≤12 |
150
(48) |
26
(17) |
1 |
|
| C-reactive protein (mg/L):† |
||||
| >100 |
173
(57) |
31
(18) |
1.45
(0.76-2.80) |
0.256 |
| ≤100 |
130
(43) |
18
(14) |
1 |
|
| Procalcitonin (μg/L):‡ |
||||
| >2 |
53
(38) |
15
(28) |
9.68
(1.81-51.93) |
<0.001 |
| 0.5-2 |
40
(28) |
2
(5) |
1 |
|
| <0.5 | 48 (34) | 4 (8) | 1.45 (0.23-9.35) |
*Adjusted by age and presence or absence of antibiotic therapy. BC – blood cultures.
†7 (2%) missing values.
‡169 (55%) missing values.